Sony Walkman WM-FX267, Руководство по обслуживанию

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TUNER SECTION
FM SECTION
Setting:
RADIO ON/OFF switch: ON
BAND switch: FM
FM Tuning Voltage Adjustment
FM Tracking Adjustment
FM TUNING VOLTAGE ADJUSTMENT
Adjust for a 9.0 Vdc reading on digital voltmeter
L3
108 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L2
87.5 MHz
AM SECTION
Setting:
RADIO ON/OFF switch: ON
BAND switch: AM
AM Tuning Voltage Adjustment
AM TUNING VOLTAGE ADJUSTMENT
Adjust for a 1.0 Vdc reading on digital voltmeter
L4
530 (531) kHz
( ): Except US model
AM IF Adjustment, AM Tracking Adjustment
* Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer ca-
pacitors.
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter
T1
1000 (999) kHz
( ): Except US model
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter
L1 (BAR ANTENNA) CT1
620 (621) kHz 1400 (1395) kHz
( ): Except US model
Modulation: 1 kHz, 75 kHz dev. (100%)
Output level: as low possible.
+0.5
–0
digital voltmeter
+
–
  
MAIN board
(VT)
(GND)
FM RF
signal generator
0.01
µ
F
    
MAIN board
(FM RF IN)
(GND)
2
jack
16
Ω
set
+
level meter
(AC: 0.5 – 5 V range)
–
digital voltmeter
+
–
  
MAIN board
(VT)
(GND)
AM RF Signal generator
Put the lead-wire
antenna close to
the set.
Modulation: 400 Hz, 30%
Output level: as low possible.
2
jack
16
Ω
set
+
level meter
(AC: 0.5 – 5 V range)
–
0 dB=1 µV
+ 0.1
– 0